Please don't mind the potato pics (will post better pics in the weeks ahead).
Just traded in, today, the:
For:
2015 S3 Technik, Panther Black Crystal Effect (only for RS models, now available for the S3), 19'' wheels, LED headlights, Audi magnetic ride, red calipers
The S3 is more agile, by far, than the RS5, and saves (by my estimation) at least 40% to 50% on fuel consumption, and you get a bigger tank (less trips to the gas station).
The S3 is rated at 4.4secs for 0-60 (roadandtrack), so it is a little slower than the RS5's 3.9secs for 0-60 (Caranddriver).
Mods will follow for:
1- RS Grille
2- Stage 1 for more HP (from 292hp to 350+)
3- Rear spoiler (maybe)
4- Front lip